- 13 -6.1. Backlight ControlThe backlight can be controlled using the following methods.• Control by pressing the backlight function control key• Control using the backlight control propertyThe backlight function can be enabled/disabled by pressing the backlight function control key (Default: Hold down[SF] key and press [M4].).With the backlight function enabled, press any key or tap the touch panel to turn the backlight ON.If a key is not pressed or the touch panel is not tapped within the backlight illumination duration, the backlightfunction remains enabled, however the backlight itself will turn OFF or dim.The backlight illumination status can be controlled by entering a value at the Backlight.Status property, regardlessof whether it is currently disabled or disabled. Furthermore, the illumination status can be acquired by reading theproperty value.DisabledEnabled, OFF/DIM[Default Status]Enabled, ONPress key other than backlightfunction control key or taptouch panel,orStatus = ENABLE_ONIllumination duration elapsessince key last pressed or touchpanel tapped,orStatus = ENABLE_OFFPress backlight function control key,orStatus = DISABLE_OFFStatus = ENABLE_OFFPress backlight function control key,orStatus = DISABLE_OFFPress backlight function control key,orStatus = ENABLE_ON